| Date: |
2010-02-18 |
| From: |
Twitchell Rice - |
| To: |
Twitchell Rice - |
| Title: |
Calibration |
| Notes: |
Last calibration: 2010-01-14 00:00:00
Cell Pressure=39.54kPa, Cell Temperature=27.98C, Ring Time=17.17usec
2nd standard at 0psi: CH4: 3.276ppm, CO2: 433ppm, H2O: 0ppm
CH4 = 3.5032ppm -> 3.316ppm Offset: -0.227ppb
CO2 = 448.8ppm -> 441ppm Offset: -15.8ppm
Notes: External filter seemed plugged up, swapped it with cleaned filter before calibration. Values improved, but I still don't agree with cal tank. I think the very low pressure is a problem. Maybe the internal filter is plugged up. I will do some check in the lab and then possibly swap out the LGR. |
| Entered by: |
Sara Knox |
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